protected void writeCdxResponse(
CDXWriter responseWriter,
CloseableIterator<String> cdx,
int readLimit,
CDXQuery query,
AuthToken authToken,
CDXAccessFilter accessChecker) {
BaseProcessor outputProcessor = responseWriter;
if (query.limit < 0) {
query.limit = Math.min(-query.limit, readLimit);
outputProcessor = new LastNLineProcessor(outputProcessor, query.limit);
} else if (query.limit == 0) {
query.limit = readLimit;
} else {
query.limit = Math.min(query.limit, readLimit);
}
if (!query.closest.isEmpty() && query.isSortClosest()) {
outputProcessor = new ClosestTimestampSorted(outputProcessor, query.closest, query.limit);
}
// Experimental
if (query.resolveRevisits) {
if (query.isReverse()) {
outputProcessor = new ReverseRevisitResolver(outputProcessor, query.showDupeCount);
} else {
outputProcessor = new ForwardRevisitResolver(outputProcessor, query.showDupeCount);
}
} else if (query.showDupeCount) {
outputProcessor = new DupeCountProcessor(outputProcessor, true);
}
if (query.showGroupCount || query.showUniqCount) {
outputProcessor =
new GroupCountProcessor(outputProcessor, query.lastSkipTimestamp, query.showUniqCount);
}
if (query.collapseTime > 0) {
if (collapseToLast) {
outputProcessor =
new DupeTimestampLastBestStatusFilter(
outputProcessor, query.collapseTime, noCollapsePrefix);
} else {
outputProcessor =
new DupeTimestampBestStatusFilter(
outputProcessor, query.collapseTime, noCollapsePrefix);
}
}
FieldSplitFormat parseFormat =
outputProcessor.modifyOutputFormat(cdxLineFactory.getParseFormat());
FieldRegexFilter filterMatcher = null;
if (query.filter != null && (query.filter.length > 0)) {
filterMatcher = new FieldRegexFilter(query.filter, parseFormat);
}
CollapseFieldFilter collapser = null;
if (query.collapse != null && (query.collapse.length > 0)) {
collapser = new CollapseFieldFilter(query.collapse, parseFormat);
}
// CDXLine prev = null;
CDXLine line = null;
// boolean prevUrlAllowed = true;
FieldSplitFormat outputFields = null;
if (!authChecker.isAllCdxFieldAccessAllowed(authToken)) {
outputFields = this.authChecker.getPublicCdxFormat();
}
if (!query.fl.isEmpty()) {
if (outputFields == null) {
outputFields = parseFormat;
}
try {
outputFields = outputFields.createSubset(URLDecoder.decode(query.fl, "UTF-8"));
} catch (UnsupportedEncodingException e) {
}
} else if (outputFields != null) {
outputFields = parseFormat.createSubset(outputFields);
}
outputProcessor.begin();
int writeCount = 0;
long allCount = 0;
int writeLimit = query.limit;
while (cdx.hasNext()
&& ((writeLimit == 0) || (writeCount < writeLimit))
&& (allCount < readLimit)
&& !responseWriter.isAborted()) {
String rawLine = cdx.next();
allCount++;
if (query.offset > 0) {
--query.offset;
continue;
}
// prev = line;
// line = new CDXLine(rawLine, parseFormat);
line = this.cdxLineFactory.createStandardCDXLine(rawLine, parseFormat);
// TODO: better way to handle this special case?
if (line.getMimeType().equals("alexa/dat")) {
continue;
}
// Additional access check, per capture
if (accessChecker != null) {
if (!accessChecker.includeCapture(line)) {
continue;
}
}
// if (!authChecker.isAllUrlAccessAllowed(authToken)) {
// if ((query.matchType != MatchType.exact) && ((prev == null) ||
// !line.getUrlKey().equals(prev.getUrlKey()))) {
// prevUrlAllowed = authChecker.isUrlAllowed(line.getOriginalUrl(), authToken);
// }
//
// if (!prevUrlAllowed) {
// continue;
// }
// }
//
// if (!authChecker.isCaptureAllowed(line, authToken)) {
// continue;
// }
//
outputProcessor.trackLine(line);
// Timestamp Range Filtering
String timestamp = line.getTimestamp();
if (!query.from.isEmpty() && (timestamp.compareTo(query.from) < 0)) {
continue;
}
if (!query.to.isEmpty()
&& (timestamp.compareTo(query.to) > 0)
&& !timestamp.startsWith(query.to)) {
if (query.matchType == MatchType.exact) {
break;
} else {
continue;
}
}
// Check regex matcher if it exists
if ((filterMatcher != null) && !filterMatcher.include(line)) {
continue;
}
// Check collapser
if ((collapser != null) && !collapser.include(line)) {
continue;
}
// Filter to only include output fields
if (outputFields != null) {
line = new CDXLine(line, outputFields);
}
writeCount += outputProcessor.writeLine(line);
if (Thread.interrupted()) {
break;
}
}
if (query.showResumeKey && (line != null) && (writeLimit > 0) && (writeCount >= writeLimit)) {
StringBuilder sb = new StringBuilder();
sb.append(line.getUrlKey());
sb.append(' ');
sb.append(UrlSurtRangeComputer.incLastChar(line.getTimestamp()));
String resumeKey;
try {
resumeKey = URLEncoder.encode(sb.toString(), "UTF-8");
outputProcessor.writeResumeKey(resumeKey);
} catch (UnsupportedEncodingException e) {
}
}
outputProcessor.end();
}
public void getCdx(CDXQuery query, AuthToken authToken, CDXWriter responseWriter)
throws IOException {
CloseableIterator<String> iter = null;
try {
// Check for wildcards as shortcuts for matchType
if (query.matchType == null) {
if (query.url.startsWith("*.")) {
query.matchType = MatchType.domain;
query.url = query.url.substring(2);
} else if (query.url.endsWith("*")) {
query.matchType = MatchType.prefix;
query.url = query.url.substring(0, query.url.length() - 1);
} else {
query.matchType = MatchType.exact;
}
}
CDXAccessFilter accessChecker = null;
if (!authChecker.isAllUrlAccessAllowed(authToken)) {
accessChecker = authChecker.createAccessFilter(authToken);
}
// // For now, don't support domain or host output w/o key as access check is too slow
// if (query.matchType == MatchType.domain || query.matchType == MatchType.host) {
// if (!authChecker.isAllUrlAccessAllowed(authToken)) {
// return;
// }
// }
String startEndUrl[] =
urlSurtRangeComputer.determineRange(query.url, query.matchType, "", "");
if (startEndUrl == null) {
responseWriter.printError(
"Sorry, matchType=" + query.matchType.name() + " is not supported by this server");
return;
}
if ((accessChecker != null) && !accessChecker.includeUrl(startEndUrl[0], query.url)) {
if (query.showNumPages) {
// Default to 1 page even if no results
responseWriter.printNumPages(1, false);
}
return;
}
if (query.last || query.limit == -1) {
query.limit = 1;
query.setSort(SortType.reverse);
}
int maxLimit;
if (query.fastLatest == null) {
// Optimize: default fastLatest to true for last line or closest
// sorted results
if ((query.limit == -1) || (!query.closest.isEmpty() && (query.limit > 0))) {
query.fastLatest = true;
} else {
query.fastLatest = false;
}
}
// Paged query
if (query.page >= 0 || query.showNumPages) {
iter = createPagedCdxIterator(startEndUrl, query, authToken, responseWriter);
if (iter == null) {
return;
}
// Page size determines the max limit here
maxLimit = Integer.MAX_VALUE;
} else {
// Non-Paged Merged query
iter = createBoundedCdxIterator(startEndUrl, query, null, null);
// TODO: apply collection-view filtering here. It should happen separately
// from exclusion check. We'd need to parse CDX lines into CDXLine object
// before passing it to writeCdxResponse(). Pass CDXFilter to getCdx()?
// Pass CDX source object that escapsulates collection-view filtering?
maxLimit = this.queryMaxLimit;
}
writeCdxResponse(responseWriter, iter, maxLimit, query, authToken, accessChecker);
} catch (URIException e) {
responseWriter.printError(e.toString());
} catch (URISyntaxException e) {
responseWriter.printError(e.toString());
} finally {
if (iter != null) {
iter.close();
}
}
}